Cutter-bar for mowing-machines



PATENTED JAN. 12, 1904;

' w.-w.;.I0N Es..

CUTTBRBAR FUR Mow-me MACHINES.

JIPLIUATION FILE? APB. 1, 1903.

H0 MODEL.

1 N VE N T0 5' V 7727(9 77470111 8 A TTORNE rs co. Pnm'aufuo, wAsnmuron.n. c.

UNITED STATES Patented January 12, 1904.

PATENT OFFICE.

WILEY WILSON JONES, or owns KANSAS.

CUTTER-BAR FOR IVIO WING-IVIACHINES.

SPECIFICATION forming part of Letters Patent No. 749,613, dated January12, 1904.

Application filed April 1, 1903. Serial No. 150,547. (No modeL) To allwhom it may concerns Be it known that I, WILEY WILSON JONES, a citizenof the United States, and a resident of Downs, in the county of Osborneand State of Kansas, have invented a new and Improved Cutter-Bar forMowing-Machines, of which the following is a full, clear, and exactdescription.

The purpose of the invention is to so construct a cutter-bar especiallyadapted for fieldmachines that the sickle-bar will have a uniform andfirm support throughout the length of its travel and in operation willbeprotected from dust, gum, or any matter or material likely to crowdits action, thereby insuring the least possible amount of friction andenabling the cutter-bar and sickle-bar to bemade lighter and wear longerthan usual.

Another purpose of the invention is to bevel the under surface of theknives andso set the knives that they will cut at the upper Walls of theslots in the guard-fingers either directly against said walls or againstfixed knives held by a suitable ledger-plate against said upper walls,which fixed knives when used are beveled at their upper edges. Underthis arrangement of knives a slanting upper or scythe cut is obtained onthe grass, and as the bevels of the sickle-knives areat their underfaces the movement ofathe machine over the stubble will tend to forcethe knives upward, holding them to their work. Furthermore, the grass isout clean and is drawn away from the knives and not drawn into the slotsof the guardfingers, as under the ordinary-set and beveling ofsickle-knives.

The invention consists in the novel construc-.

tion and combination of the several parts, as will be hereinafterfullyset forth, and pointed out in the claims. t

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar characters of reference indicate corresponding parts inall the figures.

Figure 1 is a longitudinal section through a guard-finger and atransverse section through the improved cutter-bar and the sickle-bar,

the knives being shown as cutting directly agamst the upper walls of theslots in the guard-fingers. Fig. 2 is a perspective view of a portion ofthe improved cutter-bar, showing the application of fixed knives at theupper .walls of the slots in the guard-fingers, the left hand portion ofthe sickle bar being broken away. Fig. 3 is a transverse section throughthe cutter-bar shown in Fig. 2 and through the sickle-bar and a knifethereon in proper position relative to the cutter-bar and guard-fingers,and Fig. 4 is a bottom plan view of a portion of the cutter and sicklebars of the type of construction shown in Figs. 2 and 3.

A represents the cutter-bar, which may be of any approved type; B, theguard-fingers usual formation; but the knives are attached to the upperface of the sickle-bar C and have their cutting edges provided withbeveled sur-' faces 11 at their under portions, as the knives in theoperation of the sickle-bar C are adapted to work in connection with andhave more or less bearing against the upper wall of the usual slots 12in the forward portions of the guard-fingers B.

At the rear portion of each guard-finger B ;a wider slot 13 is produced,which communicates with the narrower slot 12, in which thecutting-sections of the knives have motion,

and the wider-slotted rear portions of the guard-fingers B are adaptedto receive the cutter-bar A, enabling the guard-fingers to pass both atthe top and bottom of the said cutterbar. The wider rear slots 13 of theguard-.

fingers B are ofsuflicient length to provide a space at the forward edgeof the cutter-bar,

in which space the sickle-bar C has reciprocating movement. The casingD, which pracgtically incloses the sickle-bar C, consists of a lowerplate 15, having an upwardly-extend ng front section 15 and an upperplate 16, wh1ch at its forward end is separatedfrom theupwardly-extending section 15, and these plates 15 and 16 arecountersunk in recesses a, made in the top and bottom portions of theforward edge of the cutter-bar A, while the forward 1 ends of the plates15 and 16 and the upwardlyextending section 15 engage with the forwardwalls of the larger rear slots or openings 13 in the guard-fingers. Theguard-fingers are attached to the cutter-bar A by rivets 14 or theirequivalents, and one of the said rivets likewise passes through theupper and lower plates 15 and 16 of the casing D, thus serving to holdthe said plates in position.

Under the construction shown in Fig. 1 the cutting portions of thesickle-knives 1O operate in the forward slots 12 of the guard-fingers indirect engagement with the upper walls of the said slots 12, and nofixed knives are employed opposed to the knives of the reciprocatingsickle-bar C, which may be operated in any suitable or approved manner.Under the construction of the device shown in Figs. 2, 3, and 4stationary knives are employed in connection with the reciprocatingsickle-knives and the guard-fingers B are constructed in two sections, abody-section 17 which is a lower section, and .an upper section 18,which is preferably much narrower transversely than the lower-section 17of a guardfinger, as is particularly shown in Fig. 2.

Each lower section 17 of a guard-finger is provided with a shallowforward recess 12 at its upper portion, which recess 12 when the uppersection 18 of the guard-finger is secured in position relative to thelower or body section 17 forms the slot for the passage of a knife ofthe sickle-bar C, corresponding to the slot 12 in the form of theguard-finger. (Illustrated in Fig. 1.) Furthermore, the lower or bodysection 17 of each guard-finger is provided with a rear deeper recess13, which in connection with the upper section 18 is the equivalent ofthe slot 13. (Illustrated in the simple form of the device shown in Fig.1.) The casing D is of the same construction, is attached to thecutter-bar A, and is located in the guard-fingers in the same manner ashas been described, except that the upper plate 16 of the casing ispractically a ledger-plate, as from it knives 20 are forwardly extended,and these knives 2O correspond in number to the number of guard fingersB and engage with the upper walls of the forward guide-slots 12 of thesaid guard-fingers. The stationary knives 20 are preferably of lessdimensions than the knives which are carried by the sickle-bar C, andtheir cutting edges 21 are beveled from the top downward, as is shown inFig. 2. When attaching theform of guard-fingers shown in Figs. 2, 3,andto the cutter-bar A, the upper sections 18 are secured to the forwardend portions of the lower sections 17, in which they are countersunk, bysuitable rivets 19, while other rivets 19 and 19 are also employed, therivets 19 being passed through both of the sections of the guard-fingers to which they belong and, through the upper and lower plates ofthe easing B, while the rear rivets 19 are passed through both sectionsof the guard-fingers and through the cutter-bar A.

Under both constructions described it will be observed that the grass isgiven a scythe cut and that in operation the knives are pressed upwardin direction of the upper walls of the guide-slots 12 and 12,respectively, in the said guard-fingers, thus rendering it impossiblefor the grass to enter any space between the upper portions of theknives and the said guide-slots, so as to impede the action of theknives; but, on the contrary, the grass as it is cut is automaticallyfreed from the knives. Furthermore, it will be observed that the casingD effectually prevents the sickle-bar C from becoming clogged by anyextraneous matter, as the said sickle-bar C is covered throughout itslength, and as the casing D is of uniform construction at top and bottomthe sickle-bar Ctravels between uniform surfaces.

I desire it to be understood that the recesses in the cutter-bar may beomitted and that the upper and lower plates 16 and15 of the casing D.may be secured directly upon flush surfaces of the upper and lowerportions of the cutter-bar, if desired.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent- 1. In a cutting apparatus, a cutter -bar,guard-fingers constructed in upper and lower sections extending rearwardof their main or knife-receiving sections, a casing secured between themembers of the guard-fingers, and a sickle-bar held to travelprotectedly in the said casing, said casing having an opening for theforward projection of the knives of the sickle-bar, substantially asdescribed.

2. In a cutting apparatus, a cutter-bar for mowing-machines,guard-fingers attached to the cutter-bar, provided with knife-guideslots and with upper and lower rearwardly-extend ing members adapted forattachment to corresponding faces of the cutter-bar, a casing securedbetween the upper and lower members of the guard-fingers and having alongitudinal slot therein registering with the knifeguide slots in theguard-fingers, a sickle-bar having reciprocating movement throughout thelength of the casing, and knives extending outward from the sickle-barthrough the slots in the casing into the guide-slots in the guardfingers, the cutting edges of which knives are given an upward bevel, asdescribed.

3. In a cutting apparatus, a cutter-bar for mowing-machines,guard-fingers attached to the cutter-bar, provided with knife-guideslots and with upper and lower rearwardly-extending members adapted forattachment to corresponding faces of the cutter-bar, a casing securedbetween the upper and lower members of the guard-fingers and having alongitudinal slot therein, registering with the knifeguide slots in theguard-fingers, a sickle-bar having reciprocating movement throughout thelength of the casing, and knives extending outward from the sickle-barthrough the slots in the casing into the guide-slots in theguardfingers, the cutting edges of which knives are given an upwardbevel, the location of the knives of the sickle-bar in the guide-slotsof the guard-fingers being such that said knives have cutting relationwith reference to the upper walls of the guide-slots in theguardfingers, and are spaced from the lower walls of such slots, asdescribed.

4:. In a cutting apparatus, a cutter-bar, a casing connected therewith,blades extending from the upper portion of the casing, a sicklebar heldto reciprocate in the casing, knives carried by the sickle-bar, adaptedfor contact with the under face of the knives on the casing, the cuttingedges of the knives on the sickle-bar having an upward bevel and thecorresponding edges of the knives extending from the casing beingprovided with a downward bevel, and guard-fingers arranged forattachment to the cutter-bar, which guardfingers have slots to receivethe fixed and the movable knives and recesses for the reception of thecasing, as described.

5. In mowing-machines, a cutter-bar, guardfingers attached to thecutter-bar, provided with guide-slots near their forward ends, a casingsustained partially by the cutter-bar and partially by theguard-fingers, extending substantially the length of the forward edge ofthe cutter-bar, fixed blades extending from the upper portion of thecasing into the guideslots in the guard-fingers to an engagement withthe upper walls of the said slots, a sicklebar held to reciprocate inthe said casing, being protected throughout its length by the casing,and knives carried by the sickle-bar, extending within the guide-slotsof the guardfingers to an engagement with the under faces of the fixedknives, the cutting edges of the sickle-knives being beveled from theunder faces of the knives upwardly, as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILEY WILSON JONES. Witnesses:

H. D. WASHBURN, M. H. CRoss.

